X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;f=avahi-common%2Fmalloc.h;h=511b51c0328bce73ff8a75064096476cafc10c1b;hb=238909aaff10489fe538c8c54e3f82fe8a54b849;hp=d0e620a3fd2e4102ec98aeac8c6c3efa5582ffcb;hpb=deb6bcac8d1e1ecec4aafaee2d27dbe467e4f461;p=catta

diff --git a/avahi-common/malloc.h b/avahi-common/malloc.h
index d0e620a..511b51c 100644
--- a/avahi-common/malloc.h
+++ b/avahi-common/malloc.h
@@ -26,6 +26,8 @@
 
 #include <sys/types.h>
 #include <stdarg.h>
+#include <limits.h>
+#include <assert.h>
 
 #include <avahi-common/cdecl.h>
 #include <avahi-common/gccmacro.h>
@@ -33,22 +35,34 @@
 AVAHI_C_DECL_BEGIN
 
 /** Allocate some memory, just like the libc malloc() */
-void *avahi_malloc(size_t size);
+void *avahi_malloc(size_t size) AVAHI_GCC_ALLOC_SIZE(1);
 
 /** Similar to avahi_malloc() but set the memory to zero */
-void *avahi_malloc0(size_t size);
+void *avahi_malloc0(size_t size) AVAHI_GCC_ALLOC_SIZE(1);
 
 /** Free some memory */
 void avahi_free(void *p);
 
 /** Similar to libc's realloc() */
-void *avahi_realloc(void *p, size_t size);
+void *avahi_realloc(void *p, size_t size) AVAHI_GCC_ALLOC_SIZE(2);
+
+/** Internal helper for avahi_new() */
+static inline void* AVAHI_GCC_ALLOC_SIZE2(1,2) avahi_new_internal(unsigned n, size_t k) {
+    assert(n < INT_MAX/k);
+    return avahi_malloc(n*k);
+}
 
 /** Allocate n new structures of the specified type. */
-#define avahi_new(type, n) ((type*) avahi_malloc((n)*sizeof(type)))
+#define avahi_new(type, n) ((type*) avahi_new_internal((n), sizeof(type)))
+
+/** Internal helper for avahi_new0() */
+static inline void* AVAHI_GCC_ALLOC_SIZE2(1,2) avahi_new0_internal(unsigned n, size_t k) {
+    assert(n < INT_MAX/k);
+    return avahi_malloc0(n*k);
+}
 
 /** Same as avahi_new() but set the memory to zero */
-#define avahi_new0(type, n) ((type*) avahi_malloc0((n)*sizeof(type)))
+#define avahi_new0(type, n) ((type*) avahi_new0_internal((n), sizeof(type)))
 
 /** Just like libc's strdup() */
 char *avahi_strdup(const char *s);
@@ -57,18 +71,15 @@ char *avahi_strdup(const char *s);
 char *avahi_strndup(const char *s, size_t l);
 
 /** Duplicate the given memory block into a new one allocated with avahi_malloc() */
-void *avahi_memdup(const void *s, size_t l);
-
-/** Wraps allocator functions */
-typedef struct AvahiAllocator AvahiAllocator;
+void *avahi_memdup(const void *s, size_t l) AVAHI_GCC_ALLOC_SIZE(2);
 
 /** Wraps allocator functions */
-struct AvahiAllocator {
-    void* (*malloc)(size_t size);     
-    void (*free)(void *p);           
-    void* (*realloc)(void *p, size_t size);
-    void* (*calloc)(size_t nmemb, size_t size);   /**< May be NULL */
-};
+typedef struct AvahiAllocator {
+    void* (*malloc)(size_t size) AVAHI_GCC_ALLOC_SIZE(1);
+    void (*free)(void *p);
+    void* (*realloc)(void *p, size_t size) AVAHI_GCC_ALLOC_SIZE(2);
+    void* (*calloc)(size_t nmemb, size_t size) AVAHI_GCC_ALLOC_SIZE2(1,2);   /**< May be NULL */
+} AvahiAllocator;
 
 /** Change the allocator. May be NULL to return to default (libc)
  * allocators. The structure is not copied! */
@@ -77,8 +88,10 @@ void avahi_set_allocator(const AvahiAllocator *a);
 /** Like sprintf() but store the result in a freshly allocated buffer. Free this with avahi_free() */
 char *avahi_strdup_printf(const char *fmt, ... ) AVAHI_GCC_PRINTF_ATTR12;
 
+/** \cond fulldocs */
 /** Same as avahi_strdup_printf() but take a va_list instead of varargs */
 char *avahi_strdup_vprintf(const char *fmt, va_list ap);
+/** \endcond */
 
 AVAHI_C_DECL_END